Equal weights of Zn metal and iodine are mixed together and `I_(1)` is completley converted to `ZnI_(2)`. What fractionn by weight of original Zn remains unreacted? (Zn=65,I=127)

Equal weight of Cu metal and iodine are mixed together and the iodine is completely converted to CuI_(2) . What percentage of weight of the original copper remains unreacted? (Cu=63.5, I_(2)=254 )

R-I+Zn+I-R to R-R+ZnI_2 , The reaction is

If the atomic weight of Zn in 70 and its atomic number in 30 , Then what be the atomic weight of Zn^(2+) ?

If the atomic weight of Zn in 70 and its atomic number in 30 , Then what be the atomic weight of Zn^(2+) ?

1.67 g mixture of Al and Zn was completely dissolved in acid and evolved 1.69 L of H_2 at STP. Calculate the weight Al and Zn in the mixture.

1.67 g mixture of Al and Zn was completely dissolved in acid and evolved 1.69 L of H_2 at STP. Calculate the weight Al and Zn in the mixture.